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Moving-picture decoding processing apparatus, moving-picture coding processing apparatus, and operating method of the same
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a processing apparatus and moving picture technology, applied in the direction of electrical apparatus, digital video signal modification, pictureoral communication, etc., can solve the problems of parallel decoding process deterioration, and achieve the effect of reducing the deterioration of parallel processing capability
Active Publication Date: 2019-06-25
RENESAS ELECTRONICS CORP
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Abstract
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Benefits of technology
This approach enhances the parallel processing capability by preventing reference picture overwriting and optimizing pipeline operations, thereby improving the efficiency of decoding processes for large pixel sizes and high-definition video signals.
Problems solved by technology
Consequently, a problem such that the capability of the parallel decoding process deteriorates occurs.
Method used
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first embodiment
Configuration of Moving-Picture Decoding Processing Apparatus
[0120]FIG. 1 is a diagram illustrating the configuration of a moving-picture decoding processing apparatus according to a first embodiment.
[0121]A moving-picture decoding processing apparatus of the first embodiment illustrated in FIG. 1 has a decoding control unit 10, a first decoding processing unit 20 (DEC0), a second decoding processing unit 21 (DEC1), a memory control unit 30, and a frame memory 40.
[0122]A coded bit stream BS generated by a not-illustrated moving-picture coding apparatus is supplied to the decoding control unit 10, and coded information of each of a first I frame I0, a second P frame P1, a third P frame P2, and a fourth P frame P3 is generated from the decoding control unit 10.
[0123]Also in the first embodiment illustrated in FIG. 1, to reduce hardware of the moving-picture decoding processing apparatus executing parallel decoding processing, coded information of the first I frame I0 and the third P f...
second embodiment
Configuration of Moving-Picture Coding Processing Apparatus
[0169]FIG. 3 is a diagram illustrating the configuration of a moving-picture coding processing apparatus according to a second embodiment.
[0170]A moving-picture decoding processing apparatus of the second embodiment illustrated in FIG. 3 has the decoding control unit 10, a first decoding processing unit 50 (ENC0), a second decoding processing unit 51 (ENC1), the memory control unit 30, the frame memory 40, stream buffers 60 and 70, and a stream synthesizing unit 80.
[0171]Since the video input signal VS to be processed is supplied to the memory control unit 30 as illustrated in FIG. 3, the memory control unit 30 stores the first and third frames as odd-numbered frames and the second and fourth frames as even-numbered frames in the video input signal VS into the frame memory 40.
[0172]The first and third frames as odd-numbered frames stored in the frame memory 40 and, after that, read by the memory control unit 30 are subjected...
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Abstract
The present invention is directed to reduce deterioration in parallel processing capability. In a moving-picture decoding processing apparatus, information of a first plurality of frames and a second plurality of frames is supplied from a decoding control unit to first and second decoding processing units. For decoding the information from an intermediate point to an end point of a second preceding frame by the second decoding unit in a third period, use of a result of the process of the first decoding processing unit in the third period is inhibited, and use of a result of the process of a first preceding frame by the first decoding processing unit in a second period is permitted by an end signal. By reach of the intermediate point of the decoding of the second preceding frame by the second decoding processing unit in the second period, information from the start point to the intermediate point of the first subsequent frame included in the plural frames is decoded by the first decoding unit in the third period.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The disclosure of Japanese Patent Application No. 2013-220959 filed on Oct. 24, 2013 including the specification, drawings and abstract is incorporated herein by reference in its entirety.BACKGROUND[0002]The present invention relates to a moving-picture decoding processing apparatus, a moving-picture coding processing apparatus, and an operating method of the same and, more particularly, to a technique effective to lessen deterioration in processing capability in parallel processing.[0003]As it is well known, a general compressing method of a moving picture according to the MPEG-2 standard standardized by the international standard ISO / IEC 13818-2 is based on the principle of reducing video storage capacity and necessary bandwidth by eliminating redundant information from a video stream. MPEG stands for Moving Picture Experts Group.[0004]Since the MPEG-2 standard specifies only the syntax of a bit stream (the rules of a compression-coded ...
Claims
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Application Information
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